Made to order in front of a laminar flow hood · Ships Canada-wide from Alberta
Cactus Cowboys Mycology Supplies
Fully Colonized Mushroom Grain Spawn 6 OF 12 VARIANTS IN STOCK
GRAIN SPAWN · NO STERILE WORK NEEDED

Fully Colonized Mushroom Grain Spawn

Sterilized grain fully run through with mycelium — break it up, mix it into bulk substrate, and let it go.

$39.99– $99.99CAD · made to order
Species

Lion's Mane and Reishi spawn are being rebuilt at the bench — currently unavailable in every pack size.

Pack size

Mockup — cart and checkout run on WooCommerce.

  • No sterile technique needed. The riskiest step already happened here, under the hood.
  • Prepared under laminar flow. Filtered, unidirectional air over every open step.
  • Vacuum-sealed for transit. Arrives as clean as it left the bench.
  • Ships Canada-wide from Alberta.

How this one runs

Colonized spawn is the shortcut most growers land on after their first kit. You are buying the step that needs a flow hood, and skipping straight to the part that just needs a clean tub.

STEP 1

Let it come to temp

Take the bag out of transit and let it settle at room temperature before you handle it.

STEP 2

Break it up

Massage the bag to separate the grain without tearing the mycelium apart completely.

STEP 3

Mix to bulk

Combine with CVG substrate in a clean tub — roughly one part spawn to two parts substrate.

STEP 4

Fruit & harvest

Once it runs white through the tub, drop to fruiting conditions and manage air.

Specification

Species
Pink Oyster · Shiitake
Pack sizes
3, 5 or 10 bags
Price
$39.99 – $99.99
Variants
6 of 12 in stock
Prepared
To order
Environment
Laminar flow hood
Packing
Vacuum-sealed
Ships from
Alberta, Canada
Sterile work
None required

Cultivation supplies only. Not for consumption.

Pairs with

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Sterile oats, filter patch + injection port

$29.99 – $89.99
Pink Oyster Mushroom Liquid Culture

Pink Oyster Mushroom Liquid Culture

Live mycelium in broth · self-healing port

$19.99 – $79.99
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LME agar · five colours · 10/20/40 packs

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Liquid cultures from
$19.99
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